From: Jan Svitok <jan.svitok@...>
Date: 2007-02-02T20:04:37+09:00
Subject: Re: Adding to Hashes

On 2/2/07, Nick Black <nickblack1@gmail.com> wrote:
> Hello,
>
> I need to add key and value pairs to a hash dynamically.  I want to do this:
>
>   array = []
>   array << "hello"
>   array << "world"
>
> But with k v pairs of a hash.  The hash is being populated from a
> database and there is a potenitally unlimited (though realistically
> limited to less than 20) number of differnet keys, which my program
> will not know about until it talks to the database.
>
> Can I dynamically create a hash something like this:
>
> dbh.query("select k, v from foo where id = #{id}").each_hash do |kv|
>
>        k = kv['k']
>        v = kv['v']
>
>        myhash << k,v

Why not just
   myhash[k] = v

> end
>
> return myhash